1970 340 Swinger steering column gets hot

Discussion in 'Electrical and Ignition' started by raydurr, Jul 4, 2018.

  1. raydurr

    raydurr Active Member

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    Hello. While driving my car , after an hour or so the area of the steering column near the ignition switch gets very hot to touch. Who else has experienced this. BTW the car is totally factory. The highest amp load going thru it is probably the blower motor while this is occurring.
     
  2. General Disarray

    General Disarray Well-Known Member

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    Start with ignition switch. Pull it and check it. Could also be other wiring in the column. 48 year old electrical parts. Many people on this forum have disconnect switches on the battery that they open when then car is parked to prevent fires. Yours seems to be a problem while running. I would not drive it until that issue is resolved. Last thing you want is a car fire.
     
  3. AJ/FormS

    AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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    You got a light on there some where? Or are the brakes lights stuck on? Aftermarket signal switch?
     
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    • Dartswinger70

      Dartswinger70 Well-Known Member

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      Key in warning buzzer wiring, it was shorted out and burned up in my coumn
       
    • TrailBeast

      TrailBeast Slightly Twisted Member

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      Also keep in mind that this could be engine compartment/manifold heat drafting up the shaft, and may not be an electrical issue at all.
       
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      • Dicer

        Dicer Well-Known Member

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        Very much could be true...you could test for this. Turn key on, and whatever else..disconnect your ignition from the coil, maybe a battery charger and let the car sit for an hour.....see if the column heats up....good one @TrailBeast !
         
      • TrailBeast

        TrailBeast Slightly Twisted Member

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        Even a blind squirrel finds a nut once in awhile.:D
         
      • Blue man

        Blue man Blue Dart

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        I have 70 340 Dart Swinger with A/C doing the exact same thing. I have replaced the ignition and turn signal switch. My column gets so hot you can dang near fry an egg on it. I also have Hedman headers and the engine bay seems to have more heat and hot air moving around while engine is running. I even have two electric fans blowing and a 18” clutch fan pulling air for engine cooling.

        I am beginning to think it is exhaust heat causing my problem. In the future going to go to cremadic coated headers, maybe even thermo wrap and change to a waterless cooling system...

        Any thoughts welcome, thanks
         
      • toolmanmike

        toolmanmike FABO Staff Staff Member FABO Gold Member

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        My 70 Swinger gets pretty hot as well. I haven't felt the bottom of the column to see if it is transfer heat from the engine compartment. My 66 Dart had a missing firewall grommet and a bad lower column seal, I fixed both and the heat, small, and noise went away. I am not Mr. electrical but I wonder if a relay could be added somewhere to lighten the load on the ign. switch if that is the cause.
         
      • Blue man

        Blue man Blue Dart

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        This column heating issue for me has been like this since I restored my car over ten years ago. It is not as bad in cooler ambient tempertures. I will keep you in formed. I am going for new headers, themo wrap and a warterless system . As soon as I get my other 70 440 Dart road worthy...
         
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        • General Disarray

          General Disarray Well-Known Member

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          It doesn't seem like you have an overheating engine, only a hot steering column. If that is the case, then it makes no sense to change to a waterless coolant, like Evans. As to the steering column getting very hot, I have not experienced, nor have I had anyone ever tell me, that headers transmit that kind of heat into a column. If that is the case, it might be cheaper to try a header wrap first. If it works, then look at some ceramic coated ones.
           
        • Blue man

          Blue man Blue Dart

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          Actully I do have a heating issue to. Especially in traffic and long traffic lights. So my thought is to eliminate any and all heating problems the best I can. I run a 26” 3 core radiator with shroud. Three fans as stated in earlier post. This has been on going for years I guess I have been lucky so far not to have overheated my engine to failure. I live near Houston, TX and it really Hot this year... Also a factory A/C car that I can’t use.
           
        • MOPAROFFICIAL

          MOPAROFFICIAL Well-Known Member

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          There is a little round key light on some models. It gets hot. Had one on my 71 swinger.
           
        • MOPAROFFICIAL

          MOPAROFFICIAL Well-Known Member

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          The key light, possibly.
          Is it a timer or relay that turns it off ..
           
        • AJ/FormS

          AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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          I've never looked but I think it might be on a timer, maybe with the dome light, or the left door switch.IDK
           
          Last edited: Jul 22, 2018
        • Dicer

          Dicer Well-Known Member

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          Gear shift indicator light operates when you pull the light switch, parking lights or headlights.

          A 70 Dart has two dust seals one for the steering shaft and another for shift tube (automatic) either one or both could be missing / damaged.
           
        • General Disarray

          General Disarray Well-Known Member

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          Man, hope you get it resolved. Hang in there.